int leitura;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(25, OUTPUT);
  pinMode(27, INPUT);
}

void loop() {
  leitura = analogRead(27);
  leitura = map(leitura, 0, 4095, 0, 255);
  analogWrite(25, leitura);
  Serial.println(leitura);
}